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Acrania vs. Craniata

Acrania and Craniata Definitions

Acrania

(physiology) Partial or total absence of the skull.

Craniata

Fishes; amphibians; reptiles; birds; mammals

Acrania

Partial or total absence of the skull.

Acrania

The lowest group of Vertebrata, including the amphioxus, in which no skull exists.

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